81892124230 has 32 divisors (see below), whose sum is σ = 168741421056. Its totient is φ = 28031029344.

The previous prime is 81892124213. The next prime is 81892124231. The reversal of 81892124230 is 3242129818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81892124231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921174 + ... + 1006153.

It is an arithmetic number, because the mean of its divisors is an integer number (5273169408).

Almost surely, 2^81892124230 is an apocalyptic number.

81892124230 is an abundant number, since it is smaller than the sum of its proper divisors (86849296826).

81892124230 is a wasteful number, since it uses less digits than its factorization.

81892124230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927948.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 81892124230 in words is "eighty-one billion, eight hundred ninety-two million, one hundred twenty-four thousand, two hundred thirty".